Weathering Calculator — Product Quantities
Plan weathering product quantities for washes, pigments, oil paints and streaking effects.
How We Calculate This
Each weathering technique uses a small amount of product per unit area. Washes need about 0.008ml/cm², pigments about 0.003g/cm², oils about 0.004ml/cm² and streaking products about 0.005ml/cm². These are approximate — more or less can be used for different effects.
Frequently Asked Questions
Related Calculators
Paint Mix Calculator
Mix two or more paint colours by ratio to get the exact shade you need.
Thinning Ratio Calculator
Calculate the correct paint-to-thinner ratio for brush, airbrush or spray can.
Airbrush Pressure Calculator
Find the recommended PSI setting for your paint type, nozzle size and technique.
Spray Coverage Calculator
Estimate how much spray paint or primer you need for your model surface area.
Wash Mix Calculator
Calculate the paint-to-medium ratio for panel line washes and pin washes.
Last updated: February 2026
All calculations are estimates. Always verify quantities before purchasing materials.